Chain saw

Abstract

The invention provides a chain saw and a safety protection mechanism of the chain saw. The chain saw comprises a flexible cutting element, a supporting plate supporting the flexible cutting element, a power driving device used for driving the flexible cutting element to circularly move around the supporting plate, a main engine shell containing the power driving device, a handle device connected to the main engine shell, a protection mechanism arranged on the upper portion of a working component and a lock releasing device; the protection mechanism is movably arranged relative to the main engine shell and has a first state and a second state; according to the first state, the cutting element is completely contained and is limited from being exposed out of the protection mechanism to be approached by the protection mechanism; according to the second state, the cutting element is allowed to be exposed out of the protection mechanism and be approached by the protection mechanism; the lock releasing devices are used for being capable of locking the protection mechanism in the first state in a releasing mode and releasing the protection mechanism out of the first state; due to locking and releasing of the protection mechanism, the cutting operation is safer.

Description

technical field [0001] The invention relates to a power tool, in particular to a chain saw. Background technique [0002] At present, there are many tools for pruning plants on the market, such as scissors for pruning some relatively small branches and leaves. There are also pruners and chain saws that are usually used to trim relatively thick trees and so on. [0003] A traditional chainsaw includes a working head consisting of a saw chain and a support plate to support the chain. The chain is driven by a motor and circulates around the support plate; this type of chainsaw also includes a main handle located at the rear of the working head. Auxiliary handle located between the working head and the main handle. Chain saws are usually provided with a baffle in front of the auxiliary handle and behind the support plate to prevent the saw chain from kicking back or skipping the chain when it encounters a large load during the cutting process. In addition, the chain saw is us...

AI Technical Summary

Problems solved by technology

[0004] The chain saw guarantees the safety during operation by setting this automatic and / or manual control brake mechanism, but the connection relationship between the parts of the brake structure is very complicated, and the manufacturing precision is high, which not only makes the design of the chain saw And the manufacturing cost rises, and the vertical and many parts will also increase the weight of the chain saw itself, which is not conducive to the operator to perform cutting work

[0005] The working head of the chain saw extends longitudinally along the direction of the main body. When cutting, the working head is located in front of the operator, and the saw chain runs around the support plate at high speed. During the cutting process, the workpiece has debris splashing, which is very easy to hurt the operator.

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